RequiredFieldValidator::EvaluateIsValid Method ()

 

Called during the validation stage when ASP.NET processes a Web Form.

Namespace:   System.Web.UI.WebControls
Assembly:  System.Web (in System.Web.dll)

protected:
virtual bool EvaluateIsValid() override

Return Value

Type: System::Boolean

true if the value in the input control is valid; otherwise, false.

The following code example demonstrates how to override the EvaluateIsValid method in a custom server control so that it always returns false if the value of the RequiredFieldValidator is null or empty, and always returns true otherwise.

No code example is currently available or this language may not be supported.
No code example is currently available or this language may not be supported.

.NET Framework
Available since 1.1
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